These numbers are not helpfull without context :
- Raid level
- Number of disks
- nature & size of files
What do you get for this sample?
dd if=/dev/zero of=sample.txt bs=50M count=1
Test it accross differents cases to get a baseline:
- Local disk on client
- Locak disk on each brick
- through gluster from client
Once you have your baseline, you can start to tune system and see changes based on it.
2015-07-18 22:11 GMT+02:00 Roman <romeo.r@xxxxxxxxx>:
But when I'm inside of VM, I'm getting 50-53 MB/s for replica and 120 MB for distributed volumes...whats the logic? that slow write speed directly to mounted gfs volume slows down backup and restore process of VMs by VE.--2015-07-18 22:47 GMT+03:00 Roman <romeo.r@xxxxxxxxx>:Hi,Looked a lot from forums, but didn't find much..So I've got glusterfs 3.6.41 Gbps networkreplicate and distributed volumesso when i read from any of them, I get maxed-out network performance (around 80-120 MB/sec)If i write to distributed volume, I get 16 MB/secIf i write to replicated volume, I get around half of it (which is logical) 8-10MB/seci use XFS (with all set recommended options) and EXT4 for gluster. no difference.Disks are in HW RAID5 for Distributed volume and RAID0 for Replicated volumevolume options:performance.write-behind: offserver.allow-insecure: oncluster.server-quorum-type: servercluster.quorum-type: autonetwork.remote-dio: enablecluster.eager-lock: enableperformance.stat-prefetch: offperformance.io-cache: offperformance.read-ahead: offperformance.quick-read: offAm I missing something?--Best regards,
Roman.Best regards,
Roman.
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